_____ of the animals is getting _____ because their living areas are becoming farmlands. [ ]

A. A number, large and large

B. A number, larger and larger

C. The number, smaller and smaller

D. The number, small and small

对于一般的电磁辐射环境监测布点，通常可依主要交通干线为基准，以一定的间距划分网格进行测量。